Improvement in lamps



G, D. BURTON.

LAMP.

-Patented J'unei3, 1876.

UNITED STATES PATENT OFFICE GEORGE D. BURTON, OF NEW IPSWICH, NEWHAMISHIBE.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 178,508. dated J une13, 1876; application filed November 9, 1875.

T0 all whom -it may concem Be it known that I, GEORGE D. BURTON, of NewIpswich, in the county of Hillsborongh, State of New Hampshire, haveinvented a certain new and usetul Improvement in Lamps, of which thefoilowing is a description sufficiently full, clear, and exact to enableany person skilled in the art or science to which my inventionappertains to make and use the same, reterence being had to theaccompanying drawing, forming a part of this specification, in which-Figure 1 is an isometrical perspective view, a portion of the base andshatt of the post being represented as broken-away to show the weightand chains; and Fig. 2 a similar view showing the sliding frame.

Like letters ofreierence indicate corresponding parts in the difierentfigures of the draw- 111 g.

My invention relates espeeially to that class of lamps Which aredesigned for lighting .streets, public parks, &c., and eonsists in anovel construction and arrangement of the parts, as hereinatter morefully set forth and claimed, by which a simpier, cheaper, moreefiective, and othcrwise desirable article of this charaeter is produeedthan is now in ordinary use.

ihe nature and ehiracter of this device Will be readily obvious to allconversant With such matters from the following description:

In the drawing, A represents the base, B the shaft or body, and N thecap. These parts,which forn 1 the post, are hollow, and preferabiy castintegral, but may be made in sections, if desired, and nnited in anyconvenient manner Projecting from and opening into the cap N are fourdownwardly-curving hollow anus, C, carrying a series of chemins, D.These chains extend into thebase A, where their inner ends areattached.to the Weight or counter-balance K, their outer ends beingsecured to the sliding lamp-frame E. This frame has a central opening,G, for the shaft B, and also four quadrangnlar openings, a, for thelanterns H, the lanterns being fitted with covers J and -lamps Iin theordinary manner. A pin or bolt, L, threaded to work in a nut (not shown)is disposed in the top et thebase A,'its inner end being shaped to fitthe groove 90 in the weight K, and thus form a key or stop to secure thelamps I a't any desired elevation.

In the use'of my improvement it will be obvious that when the key-bolt Lis withdrawn the lamps may be readiiy raisedor depressed by slidin g theframe along the shaft, the ehains running freely through the arms, andthe weight rising and falling within the body of the post.

Having thus explained my invention, what I ciaim is- The combination,with the frame, lantern, and lamp, suspended by means of a chain, D, inthe post A B N, of the grooved weight K, and pin or boit L,substantially as and for the purpose described. V

' GEORGE D. BURTON. Witnesses:

W. A. PRESTON,

G. A, WHITNEY.

